Timeless is a powerful enough format already, and Ancient Tomb's already poised to enable combo decks like Sneak Attack and Show and Tell Strip Mine Why ban Ancient Tomb when they're also introducing one of the best possible answers to it
Still not really playable, but the fact that it's a zombie makes it conceivable that you'd use it in some deck that cares
Madison Li and then is used to power artefacts, buff robotic creatures like Rex, Cyber Hound and otherwise give you the upper hand through the power of applied science
They're the Clam Creole Jazz Kings, apparently, and the effect is fun, where the player that summons Clam Session chooses a word, forcing everyone to sing a song with that word in it
Spell Swindle Five mana for a counterspell isnt curve-friendly
Infernadark Tome You do not have to pay LP or discard cards to activate the effects of your "Nightblazer" monsters